Which level of war deals with the details of engagement in battle?

The tactical level of war is focused on the details of engagement in battle, which includes the planning and execution of specific operations at the point of contact with the enemy. This level emphasizes the immediate and short-term aspects of combat, such as troop movements, battlefield tactics, weaponry deployment, and maneuvers. It concentrates on how forces are employed in the field to achieve victory in engagements and battles.

The other levels of war—strategic and operational—are more concerned with broader planning and coordination. The strategic level addresses overarching objectives and national policy, focusing on how military actions support national goals. The operational level bridges the strategic and tactical, laying out campaigns and major operations aimed at achieving those strategic objectives while still considering the broader context. The administrative level, while essential for ensuring that forces are sustained and supported, doesn't directly deal with the engagement aspects of a battle. Thus, the tactical level is indeed the correct response, as it is the one specifically tailored to the intricacies of engagement in combat.